*{margin: 0;padding: 0;}
ul,ol{list-style: none;}
img{display: block;}
a{color: #464646;text-decoration: none;}
h1,h2,h3{font-size: 16px};
body{font-family: Arial, "宋体";}

.l{float: left;}
.r{float: right;}
.clear::after{content: "";display: block;clear: both;}
.container{width: 980px;margin: 0 auto; position: relative;}
.container-fluid{width: 100%;}

#head{width: 100%;height: 41px;background: url(../images/head_bg.png) repeat-x;}
#head .container{height: 41px;}
#head .head_logo{width: 220px;height: 41px;background: url(../images/ost_bg.png) 0 -38px no-repeat;}
#head .head_logo a{display: block;width: 100%;height: 100%; text-indent: -99999px;overflow: hidden;}
#head .head_ad{margin-left: 8px;}
#head .head_menu{font-size: 12px;}
#head .head_menu div{height: 18px;margin-top: 13px;}
#head .head_menu .head_menu_czsh{margin-right: 26px;padding-left: 20px;background: url(../images/czsh.png) no-repeat;}
#head .head_menu .head_menu_czsh:hover{color: #ff4e00;}
#head .head_menu .head_menu_top{}
#head .head_menu .head_menu_top:hover{color: #ff4e00;}
#head .head_menu .head_menu_top:hover .head_menu_btn{background: url(../images/ost_bg.png) -170px -134px no-repeat;}
#head .head_menu .head_menu_top .head_menu_btn{display: inline-block;vertical-align: middle; margin-left: 5px; width: 11px;height: 11px; background: url(../images/ost_bg.png) -150px -134px no-repeat; }